I bought her last year and After a year of the car not starting, then me replacing motor with JDM because head was shot, pistons worn. I did timing belt job, new spark plugs, wires, rotor cap,etc.I also removed the canister system. Started car and it stays on with my foot on the gas, just this morning I started it again and it stayed on for a few seconds. I noticed a small leak under fuel filter which I’ll fix tonight. Is that a reason it’s behiavior is like so? I’m assuming but will keep updated.